[INFO] updating cached repository https://github.com/sgr2848/nolang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/sgr2848/nolang
[INFO] [stderr]    18c7a69..8959dc1  master     -> master
[INFO] [stderr]  * [new branch]      oh_hell    -> oh_hell
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8959dc137768d7453b4e6cd9c92ec554e9c7ae96
[INFO] checking sgr2848/nolang against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgr2848%2Fnolang" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sgr2848/nolang on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sgr2848/nolang
[INFO] finished tweaking git repo https://github.com/sgr2848/nolang
[INFO] tweaked toml for git repo https://github.com/sgr2848/nolang written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/sgr2848/nolang already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 30ee16a67c21450f9f3db24dcab5765b7fd4505426743ec32d7a339e6f592aba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "30ee16a67c21450f9f3db24dcab5765b7fd4505426743ec32d7a339e6f592aba"`
[INFO] [stderr]     Checking nano_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `Lexer`, `NodeId`, `ParseTreeNode`, `Type`, `build_pt`
[INFO] [stderr]   --> src/mapper.rs:5:9
[INFO] [stderr]    |
[INFO] [stderr] 5  |         build_pt
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 8  |         Type,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 9  |         Lexer},
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr] 10 |     node::{
[INFO] [stderr] 11 |         NodeId,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 12 |         ParseTreeNode,
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PTVec`
[INFO] [stderr]  --> src/node.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     PTVec,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/main.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::{HashMap, VecDeque};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Lexer`, `NodeId`, `ParseTreeNode`, `Type`, `build_pt`
[INFO] [stderr]   --> src/mapper.rs:5:9
[INFO] [stderr]    |
[INFO] [stderr] 5  |         build_pt
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 8  |         Type,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 9  |         Lexer},
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr] 10 |     node::{
[INFO] [stderr] 11 |         NodeId,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 12 |         ParseTreeNode,
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PTVec`
[INFO] [stderr]  --> src/node.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     PTVec,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/main.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::{HashMap, VecDeque};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/main.rs:51:28
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 for (keys, value) in new_f.clone().id_map.data {
[INFO] [stderr]    |                            ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `some_vec`
[INFO] [stderr]   --> src/mapper.rs:38:54
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn insert_val(&mut self,some_id : String,mut some_vec:VecDeque<String>){
[INFO] [stderr]    |                                                      ^^^^^^^^ help: consider prefixing with an underscore: `_some_vec`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:56:29
[INFO] [stderr]    |
[INFO] [stderr] 56 |                         let mut red = lexer::ConvertInfix {
[INFO] [stderr]    |                             ----^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:62:29
[INFO] [stderr]    |
[INFO] [stderr] 62 |                         let mut pt = interpreter::PTVec::new_tree();
[INFO] [stderr]    |                             ----^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let mut current_string: String = stack_v.pop_front().unwrap();
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let mut current_n = a.get(_ni).unwrap();
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:251:21
[INFO] [stderr]     |
[INFO] [stderr] 251 |                 let mut postfix_vec = ConvertInfix {
[INFO] [stderr]     |                     ----^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mapper.rs:38:50
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn insert_val(&mut self,some_id : String,mut some_vec:VecDeque<String>){
[INFO] [stderr]    |                                                  ----^^^^^^^^
[INFO] [stderr]    |                                                  |
[INFO] [stderr]    |                                                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mapper.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut parse_tree_vec  = PTVec::new_tree();
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/main.rs:51:28
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 for (keys, value) in new_f.clone().id_map.data {
[INFO] [stderr]    |                            ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `some_vec`
[INFO] [stderr]   --> src/mapper.rs:38:54
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn insert_val(&mut self,some_id : String,mut some_vec:VecDeque<String>){
[INFO] [stderr]    |                                                      ^^^^^^^^ help: consider prefixing with an underscore: `_some_vec`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `loopss`
[INFO] [stderr]   --> src/cli.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn loopss(){
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:56:29
[INFO] [stderr]    |
[INFO] [stderr] 56 |                         let mut red = lexer::ConvertInfix {
[INFO] [stderr]    |                             ----^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:62:29
[INFO] [stderr]    |
[INFO] [stderr] 62 |                         let mut pt = interpreter::PTVec::new_tree();
[INFO] [stderr]    |                             ----^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NotID`
[INFO] [stderr]   --> src/mapper.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     NotID
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_full`
[INFO] [stderr]   --> src/node.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn is_full(&self)->bool{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_leaf`
[INFO] [stderr]   --> src/node.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn is_leaf(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_null`
[INFO] [stderr]   --> src/node.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn is_null(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/node.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn get(self)->Option<MapStruct>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]   --> src/node.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn get_mut(&mut self)->&mut Option<MapStruct>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parent`
[INFO] [stderr]   --> src/node.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn parent(self) -> Option<NodeId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `left_child`
[INFO] [stderr]   --> src/node.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn left_child(self) -> Option<NodeId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `right_child`
[INFO] [stderr]   --> src/node.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub fn right_child(self) -> Option<NodeId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SiblingE`
[INFO] [stderr]   --> src/node.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     SiblingE,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ParentE`
[INFO] [stderr]   --> src/node.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     ParentE
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         stdin().read_line(&mut input_string);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let mut current_string: String = stack_v.pop_front().unwrap();
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let mut current_n = a.get(_ni).unwrap();
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:251:21
[INFO] [stderr]     |
[INFO] [stderr] 251 |                 let mut postfix_vec = ConvertInfix {
[INFO] [stderr]     |                     ----^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mapper.rs:38:50
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn insert_val(&mut self,some_id : String,mut some_vec:VecDeque<String>){
[INFO] [stderr]    |                                                  ----^^^^^^^^
[INFO] [stderr]    |                                                  |
[INFO] [stderr]    |                                                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/mapper.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut parse_tree_vec  = PTVec::new_tree();
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `loopss`
[INFO] [stderr]   --> src/cli.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn loopss(){
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NotID`
[INFO] [stderr]   --> src/mapper.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     NotID
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_full`
[INFO] [stderr]   --> src/node.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn is_full(&self)->bool{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_leaf`
[INFO] [stderr]   --> src/node.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn is_leaf(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_null`
[INFO] [stderr]   --> src/node.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn is_null(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/node.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn get(self)->Option<MapStruct>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_mut`
[INFO] [stderr]   --> src/node.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn get_mut(&mut self)->&mut Option<MapStruct>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parent`
[INFO] [stderr]   --> src/node.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn parent(self) -> Option<NodeId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `left_child`
[INFO] [stderr]   --> src/node.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn left_child(self) -> Option<NodeId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `right_child`
[INFO] [stderr]   --> src/node.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub fn right_child(self) -> Option<NodeId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SiblingE`
[INFO] [stderr]   --> src/node.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     SiblingE,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ParentE`
[INFO] [stderr]   --> src/node.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     ParentE
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         stdin().read_line(&mut input_string);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `"docker" "inspect" "30ee16a67c21450f9f3db24dcab5765b7fd4505426743ec32d7a339e6f592aba"`
[INFO] running `"docker" "rm" "-f" "30ee16a67c21450f9f3db24dcab5765b7fd4505426743ec32d7a339e6f592aba"`
[INFO] [stdout] 30ee16a67c21450f9f3db24dcab5765b7fd4505426743ec32d7a339e6f592aba